Create a user story for the user 'Aggregator'

[Veldhoen]

User scenarios described here

• [x] NDE Dataset Register user
• [x] Clariah harvester
• [x] Netwerk Oorlogsbronnen user
• [x] (Future) European LOD aggregator user (LODA) (zie oudere architectuurplaat)
• [x] (Current) European/EUscreen aggregator user (will not model this)

[wmelder]

Willem vraagt dimitra

[wmelder]

Dimitra gaat reviewen.

[wmelder]

updaten met opmerkingen Dimitra